22 



UNITED STATES NATIONAL MUSEUM BTLLKTIN 2(i3 



Mesouotiini (j)l. S, fi^'. 5) nilher rouiuled, V)lack, 

 obscured by a greyish tt)meiituiii, Icavins;; llii-ec lonsitu- 

 dinal streaks and narrow mai'iiiiial borders on tlie 

 yellow isb callosities, covered with a yellow isli |)ul)es- 

 cence; liuiiieral and notoplenral calli lisiht yellow , nioie 

 or less sliininfi'; poslsiit.iual calli nari'ow , dull yellow, 

 the median one siiort, pointcii aiitcriuriy and somewhat 

 truncated |)osteriorly, the lateral i)air connected with 

 very small and ratliei' inconspicuous presutural calli 

 and hardly exlenditiu- to the posterolateral mariiins. 

 Scutellum liuht yellow, covered with a liiiht yellow 

 [lubescence, with a larue blacU apical spot and a very 

 narrow l)lack i>a>al ti'ans\orse band. Pleura (pi. S, 

 fiu;. Ci) black, the anterior bordei' and below wing-bases 

 redilish brown, with two shining light yellow, compara- 

 ti\'ely nai'i'ow spots on meso- and metaplcnra, the 

 anterior one coimecling with a sinuhir colored oi)long 

 basal spot of the sternopleuron: mesophragma black. 

 All bristles black; scutellar twn pairs; iiunu'ral near the 

 posterior corner, de\eloped but \erv minute, bi'ownish; 

 pteroplenral distinctly developed; scapulai' siiort. 



Abdomen (pi. S, fig. 7) comparali\"cly small, reddish 

 yellow, with a l)lack basal band on eacii tergum, on 

 the second terginn it is interrupted near the lateral 

 margins, and on liie i-emaiiung terga connected with 

 a black median longitudinal streak, the streak not 

 reacldng to tiie posterior margin of each tergum l)nt 

 bardh' extending to I lie i)ostei-i(ir margin on the fiftii; 

 the third tergum with blackish-i)i'()wii bristles; the 

 fiftli tergum with one pair of brown transverse oblong 

 shining spots. 



Wings (pi. 8, fig. 1) large, with conspicuous su]ier- 

 numerary lobe, R)+,^ distiiu'tly bristled from the base 

 to before tip, hyaline with blackish-l)riiw ii paltei-n as 

 follows: costal band nearly the same width throughout, 

 beconnng paler on its jjosterior half apical spot e.x- 

 tendirig to m; anal streak extending naiiuwly to the 

 corner of supernumerary lobe, and occupying ajtical 

 l)ortion of anal cell, w here it has a straight innei' maigin 

 right-angled to the anal \ein; median spot on r-m 

 conspicuous; sid)apical streak on m-cu irregular in 

 shape, extending from K^ to the wing margin. Ptero- 

 stignia distinctly longer than the second costal cell, 

 blackish brown; prolongation of anal cell verj' long, 

 longer than the cell proper, some black shaggy hairs 

 on exlerno-anterior border of cu. 



Legs liglit yellow, rather long and slender. Front 

 legs (pi. 8, fig. Hi) comparatively small; fennir rather 

 thick, with a small elongate blackish subapical spot on 

 external surface, with yellowish setae becoming dis- 

 tinctly longer on the dorsal border and ventral margin, 

 intermixed with some black ones; tibia as long as 

 femur, with blackish ])ubescence, mostly yellowish 



on apical half, apical bruslilike setae yellowish brown; 

 tarsi as long as the tibia, the first segment as long as the 

 following together, yellowish pubescent, rather sparse 

 yellowisii bristles on ventral surface, with black apical 

 s])inelike bristles, the remaining segments with l)lack 

 setae which become yellowish brown on the ventral 

 border, the apical segment slightly brdWiiish. Midlegs 

 (pi. 8, fig. 15) conspicuously long ami slender, with 

 coxa and trochanter somewhat dark colored; femur 

 nearly sti'aighl and very slightly luirrowcd apically, the 

 pubescence nuunly whitish yellow inlernuxed with 

 numerous black on a])ical one-third, beconnng densei' 

 on dorsal border, a few long white hairs on apical 

 one-third of doi'sal margin and on basal half of \cntral 

 margin; tibia a little shorter than femur, distinctly but 

 slightlv curxed, with a whitish-yellow jiubescence 

 internuxed with very short black hairs, apical spur 

 comparatively small ami black; in addition, three 

 yellowish-brown short spinelike l)ristles on each side 

 along apical inaigin; tarsi distincth" shorter than tibia, 

 ]iubescent as in hunt tarsus, apical segment slightly 

 brownish. Hindlegs (pi. S, fig. H) very slightly shorter 

 than the midlegs; coxae and trochanters black, whitish 

 pubescent; femur curved, with dorsal apex blackish 

 brown, the jjubescence yellowish white basally, black 

 on the apical blackish portion, on tlorsal sparse, long, 

 erect, yellowish-white bail's border apical half; tibia a 

 little shorter than tlie fenuir, tlie l)asal and apical 

 one-third blackish brown, light yellowish-brown pubes- 

 cence, yellowish-white setae on apical two-thirds of 

 ventral border, a well-defined blackish brush-])atch on 

 apical one-third of inside; tarsi distinctly shorter than 

 tibia, cons])icuously ])aler, first segment nearly half as 

 long as tibia, pubescent and l)ristleil as in the front 

 tarsus, apical segments more or less brow lush. 



Length: Body 7 nnn, wing 7 mm. 



Fe.m.\le. — Pal])i rather short, distinctly broadened at 

 about the nuddlc; dark portion of legs daiker than in 

 the male, the himl tibiae almost entirely blackish 

 brown, the latter broadened at about the middle and 

 without the brush-patch; abdomen without the bristles 

 of the third tergum; ovipositor moderate in length, the 

 basal segnuMit shining black and furnished with a short 

 pale pubescence, the second segment shining I'cddish 

 brown. 



Length: Body (with o\ipositor) 8 mm, wing G.8 mm. 



Types.— Holotype, c?, USNM 69373, Jan. 23, 1953; 

 paratvpes, 14cf , 49, -Ian. 23-Feb. 24; all from Ishiuaki 

 Is. (NIAS). 



Remarks. — Li this species there is little vai'ialiou, 

 the size varies from (1.5 to S nun in Ixidy length ami from 

 fi.5 to 7.5 mm in wing lenuth. 



